THE APPLICATION OF MATHEMATICAL SIMULATION TECHNIQUES IN DETERMINING THE DYNAMIC BEHAVIOR OF AUTOMOBILES AND THEIR OCCUPANTS WHEN IN COLLISION WITH VARIOUS ROADSIDE OBJECTS OR WHEN TRAVERSING CURVES IN THE ROAD, SHOULDERS, OR OTHER SITUATIONS WAS STUDIED. THE DEVELOPMENT OF AN ANALYTICAL MODEL TO PREDICT THE DYNAMIC RESPONSE OF AN AUTOMOBILE'S OCCUPANT IN THREE-DIMENSIONAL SPACE WAS THE PRIMARY AIM OF THE WORK. THE DERIVATION OF THE OCCUPANT MODEL, A VALIDATION STUDY, AND A DESCRIPTION OF COMPUTER INPUT DATA FOR DETERMINING THE OCCUPANT'S RESPONSE IS REPORTED. COMPUTER INPUT (GIVEN IN TWO PARTS) AND SAMPLE OUTPUT OF THE STUDY IS PRESENTED. CARD IMAGES OF INPUT, AS WELL AS INPUT PRINTED IN A MORE CONVENTIONAL FORMAT IS PRESENTED. PRINTED OUTPUT PRESENTATIONS INCLUDE A DETAILED GRAPHICAL DISPLAY OF THE OUTPUT PARAMETERS. SUSPENSION BUMPER INPUT AND WAGON TONGUE DEVICE DESCRIPTIONS ARE INCLUDED IN APPENDICES.